Flora of North America species comparison

main stems persistent, terete, not winged, glabrous or scabridulous; ultimate branchlets deciduous, subterete, not winged, glabrous or scabridulous.

main stems terete, not winged, glabrous; ultimate branchlets deciduous, flat cladodes to 1 cm wide, not winged, glabrous.

on main stems spiral, scalelike;

stipules not auriculate, pale reddish brown.;

leaves on ultimate branchlets distichous, well developed;

stipules not auriculate, greenish white;

blade elliptic to oblong, 3–10 × 1–4 mm, base cuneate to subcordate, apex obtuse to emarginate, both surfaces glabrous or scabridulous.

on main stems deciduous, spiral, scalelike;

stipules not auriculate, dark brown.;

leaves on ultimate branchlets caducous, distichous, scalelike;

stipules absent.

cymules, proximal staminate with 2 flowers, distal bisexual with 1 pistillate flower and 1–3 staminate flowers.

cymules, bisexual or staminate, with 1–2(–3) pistillate and/or 2–5 staminate flowers.

staminate 0.7–1.5 mm, pistillate spreading in fruit, (1–)1.5–3(–3.5) mm.

staminate (1–)2–6 mm, pistillate spreading in fruit, (1–)2–4(–7) mm.

sepals 5–6 in basal cymules, 4 in distal cymules, pale yellowish green, sometimes suffused with red, flat, 0.5–1 mm;

nectary extrastaminal, 4(–6) glands;

stamens 2(–3 in basal cymules), filaments connate throughout.

sepals 6, purplish pink to cream, flat, (0.8–)1–1.5(–2.3) mm;

nectary extrastaminal, 6 distinct glands;

stamens 3(–5), filaments connate 1/2–3/4 length.

sepals 5–6, green with nearly white margins, flat, (0.5–)0.7–1.1 mm, 1-veined;

nectary 3 glands (2-fid distally, thus resembling 6 glands).

sepals 6, purplish pink to cream, flat, 1–1.5(–2.2) mm, 1-veined;

nectary annular, undulate or crenulate.

2.3–2.7 mm diam., smooth.

3–4 mm diam., finely wrinkled.

uniformly brown, 1.1–1.5 mm, longitudinally ribbed.

uniformly brown, 1.4–2.6 mm, irregularly verrucose.